Statues of 4 Iranian Scientists,Astronomer,Physisian opposit the Building of UN office in Wien Austria

Ibn Sina, Avicenna, was a Persian who wrote almost 450 works on a wide range of subjects, of which around 240 have survived. In particular, 150 of his surviving works concentrate on philosophy and 40 of them concentrate on medicine. His most famous works are The Book of Healing, a vast philosophical and scientific encyclopedia, and The Canon of Medicine,[8] which was a standard medical text at many medieval universities.